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UGG to Under Armour Shoe Size Conversion
Switching from UGG to Under Armour? UGG runs large and Under Armour runs small, so the size you order changes. Here's the full chart.
Under Armour runs 1 size larger than UGG, so you may need to size down when switching.
Size down 1 moving to Under Armour
Under Armour runs larger — order half a size smaller than your UGG size.
Find your UGG size on the left, read across for Under Armour:
| UGG size | Under Armour size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 7.5 | 5.5 | 37 | 23.5 |
| 6.5 | 7.5 | 5.5 | 37.5 | 23.9 |
| 7 | 8 | 6 | 38 | 24.3 |
| 7.5 | 8.5 | 6.5 | 38.5 | 24.7 |
| 8 | 9 | 7 | 39.5 | 25.1 |
| 8 | 9 | 7 | 40 | 25.5 |
| 8.5 | 9.5 | 7.5 | 41 | 25.9 |
| 9 | 10 | 8 | 41.5 | 26.3 |
| 9.5 | 10.5 | 8.5 | 42.5 | 26.7 |
| 10 | 11 | 9 | 43 | 27.1 |
| 10.5 | 11.5 | 9.5 | 43.5 | 27.5 |
| 11 | 12 | 10 | 44 | 27.9 |
| 11.5 | 12.5 | 10.5 | 44.5 | 28.3 |
| 12 | 13 | 11 | 45.5 | 28.7 |
| 12.5 | 13.5 | 11.5 | 46 | 29.1 |
| 13 | 14 | 12 | 47 | 29.5 |
| 13.5 | 14.5 | 12.5 | 47.5 | 29.9 |
| 14 | 15 | 13 | 48 | 30.3 |
| 14 | 15 | 13 | 48.5 | 30.7 |
| 14.5 | 15.5 | 13.5 | 49 | 31.1 |
| 15 | 16 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. UGG runs about half a size large and moulds to the foot — size down half, or a full size for slippers. Under Armour tends to run about half a size small, especially in performance trainers.
Under Armour to UGG → · UGG chart · Under Armour chart · Brand finder
What is a UGG 10.5 in Under Armour?
A UGG 10.5 is about a Under Armour 11.5 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do UGG and Under Armour fit the same?
Not quite — Under Armour runs about 1 size larger than UGG.
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